Skip to main content
. 2022 Jan 25;11(3):338. doi: 10.3390/foods11030338

Table 4.

Changes in colour indices of Sarda sarda burgers packaged in active PP films functionalized with 1018K6 by storage time.

Day 0 3 5 7
m ± sem m ± sem m ± sem m ± sem
L* CTR 42.68 ± 1.09 41.07 ± 0.51 A 42.95 ± 1.20 45.04 ± 0.77 B,x
1018K6-PP 42.68 ± 1.09 a 39.76 ± 0.74 b,A 42.32 ± 0.80 a 42.79 ± 0.70 B,y
a* CTR 6.12 ± 0.89 4.93 ± 0.20 A 4.87 ± 0.47 A,x 7.46 ± 0.27 B,X
1018K6-PP 6.79 ± 0.34 a,A 4.74 ± 0.37 B 5.95 ± 0.20 b,A,y 6.12 ± 0.63 Y
b* CTR 12.42 ± 0.38 a,A 15.61 ± 0.31 B,x 10.71 ± 0.77 A 10.93 ± 0.60 b,A
1018K6-PP 12.42 ± 0.38 a,A 14.50 ± 0.37 B,y 12.29 ± 0.38 a,A 10.53 ± 0.70 b,A
Chroma CTR 13.89 ± 0.44 a,A 16.37 ± 0.33 B,x 11.79 ± 0.83 b,A,x 13.24 ± 0.61 A
1018K6-PP 14.15 ± 0.43 15.28 ± 0.35 A,y 13.66 ± 0.37 B,y 12.21 ± 0.86 B
Hue angle CTR 63.86 ± 3.54 a 72.47 ± 0.62 b,A 65.48 ± 1.87 B 55.51 ± 1.09 b,B,x
1018K6-PP 61.34 ± 1.08 A 71.86 ± 1.45 B 64.11 ± 0.97 A 60.06 ± 1.83 A,y
ΔE CTR 4.20 ± 0.60 A 3.61 ± 0.88 B 4.06 ± 0.91 B
1018K6-PP 4.60 ± 0.80 A 2.79 ± 0.70 a,B 3.65 ± 0.76 b,B
Δb* CTR 3.10 ± 0.00 −1.71 ± 0.91 −1.49 ± 0.54
1018K6-PP 2.09 ± 0.39 −0.13 ± 0.37 −1.88 ± 0.75

In each sampling day, three samples were analysed by experimental group. Statistical analysis was performed comparing experimental groups at each sampling time and within each experimental group along the ripening period. All data were presented as mean (m) ± standard error (sem). Different superscript uppercase letters indicate a significant difference at p < 0.01. Different superscript lowercase letters indicate a significant difference at p < 0.05. a,b In the same row mean values (same group in different days) followed by different letters show significant differences. x,y In the same column mean values (different groups on the same sampling time) followed by different letters show significant differences.